Nasa will test on Wednesday in a supersonic parachute of 30 meters in diameter, intended to curb the future spacecraft then in phase of landing on the planet Mars.
Decidedly, a trip on the planet March seems to be getting closer. On Wednesday, Nasa must normally start the tests in a supersonic parachute designed to curb the fall on the red planet for future manned spaceships.
The parachute LDSD of Nasa, the largest ever deployeda figure by itself, the corresponding to the diameter of the parachute, 30 meters. Why a size as impressive? First, since the vessels which will host of men for the big trip will be bigger than all those that the conquest of space was able know. But also, because the Martian atmosphere is very little dense, braking much less an object the penetrating than does the earth's atmosphere during the return of space travellers.
A saucer which moves to 2.35 times the speed of sound
for the test, the parachute will be subjected to a terrible force when he will have to deploy. In effect, the saucer will move to 2.35 times the speed of sound. Before this, the whole will have been sent to 37 kilometers of our floor of cows, helped in this by a giant ball. Once the souscoupe dropped, the parachute will be transported to 55 kilometers. Such an altitude is necessary for purposes of reproduction the most faithful of the atmospheric conditions mars. In its press release, Nasa explains as simply as possible: "We want to see if the parachute may deploy and decelerate the test vehicle while it is in supersonic flight ".
For the space agency, LDSD should be able "to reduce the input speed of the vehicle to Mach 2 to a subsonic speed ". It is hoped that this test will be conclusive for Nasa. Last year, the first parachute was torn and had only been able to inflate properly.
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